I'm just curious and fully realize that this is a game development in progress, thus not perfect.
I'm not sure if the domestic market is very large in real life. But in this game it seems we cant scratch together demand for even 1 daily frequency between ANY major domestic city pair with even a 70 seater aircraft, among over 70 domestic airports! (only 5 or six are of significance though)
The graph on the airport information page however indicates domestic demand of 20% in Buenes aires - (EZE), 50% in Mar del Plata, 35% in Buenos Aires - Jorge Newbery, 30% in Rosario. For those four major airports just mentioned i can deploy 6 daily a320's to santiago, 767's and A330's to sounth american intl. and US airports, could even do multiple daily's or 747's to some major cities in Europe! But still next to zero domestic demand.
Is this true to real life market?
Perhaps this can be more accurately displayed in the airport info page.